Here's the side by side comparison (I'll add regular duid wildshape later):
Pine Bender as is:
Level 7: Medium, 1d3 Slam, +4 Str, +2 Con
Level 9: Large, 1d4 Slam, +8 Str, +4 Con, +2 Natural AC, rock throwing and catching, 40 move
Level 12: Huge, 1d6 Slam, +16 Str, +8 Con, +5 Natural AC, rock throwing and catching, 40 move
Level 15: Gargantuan, 1d8 Slam, +24 Str, +12 Con, +9 Natural AC, rock throwing and catching, 40 move
Level 16: Colossal, 2d6 Slam, +32 Str, +16 Con, +14 Natural AC, rock throwing and catching, 50 move
Pine Bender if I make it Wild Shape into Giants:
Level 7: Large, 21 Str, 8 Dex, 15 Con, +5 Natural AC, 40 Move
OR Large, 21 Str, 10 Dex, 17 Con, +5 Natural AC, 40 Move, Fly 40
OR Large, 1d6 Claw, 1d6 Bite, 23 Str, 14 Dex, 23 Con, +5 Natural AC, rend, 30 Move
OR Large, 1d4 Claw, 17 Str, 16 Dex, 21 Con, +5 Natural AC, 30 Move, Climb 20
OR Large, 20 Str, 12 Dex, 15 Con, +6 Natural AC, rock throwing, 40 Move
OR Medium, 1d4 Claw, 1d4 Bite, 20 Str, 13 Dex, 18 Con, +6 Natural AC, cannibalize, rend, 30 Move
OR Medium, 1d3 Slam, 1d4 Bite, 15 Str, 10 Dex, 13 Con, +2 Natural AC, 30 Move, Climb 30
OR Large, 1d6 Claw, 1d6 Bite, 22 Str, 15 Dex, 21 Con, +6 Natural AC, 30 Move
OR Large, 2d6 Claw, 2d6 Bite, 28 Str, 16 Dex, 28 Con, +5 Natural AC, death throes, pounce , rend, tortured mind, 20 Move
Level 8: Large, 1d4 Slam, 29 Str, 9 Dex, 21 Con, +9 Natural AC, rock throwing, 40 Move
OR Large, 22 Str, 15 Dex, 21 Con, +7 Natural AC, rock throwing, 30 Move, Swim 40
OR Huge, 2d4 claw, 1d8 Bite, 21 Str, 19 Dex, 18 Con, +10 Natural AC, frightful presence, 20 Move
OR Large, 1d6 Claw, 1d8 Bite, 25 Str, 11 Dex, 24 Con, +8 Natural AC, rend, 30 Move
OR Large, 1d4 Slam, 1d8 Gore, 27 Str, 11 Dex, 23 Con, +8 Natural AC, 40 Move, Burrow 10
Level 9: Large, 2d6 Claw, 1d8 Bite, 29 Str, 13 Dex, 27 Con, +11 Natural AC, dazing blow, improved grab, rake rend, 40 Move
Level 10: Large, 23 Str, 8 Dex, 15 Con, +7 Natural AC, 40 Move
OR Large, 1d6 Claw, 1d6 Bite, 23 Str, 14 Dex, 23 Con, +7 Natural AC, rend, 30 Move
Level 12: Large, 25 Str, 11 Dex, 17 Con, +2 Natural AC, rock throwing, 40 Move
OR Large, 1d6 Bite, 31 Str, 16 Dex, 29 Con, +14 Natural AC, dazing blow, 40 Move
OR Huge, 2d6 Slam, 27 Str, 8 Dex, 20 Con, +11 Natural AC, rock throwing, 40 Move
OR Large, 1d6 Claw, 1d6 Bite, 34 Str, 11 Dex, 25 Con, +11 Natural AC, rock throwing, cannibalize, rend, 40 Move
OR Large, 1d4 Slam, 1d8 Gore, 20 Str, 17 Dex, 25 Con, +8 Natural AC, 50 Move
OR Large, 25 Str, 10 Dex, 20 Con, +9 Natural AC, 40 Move, Burrow 5
Level 13: Huge, 33 Str, 12 Dex, 22 Con, +11 Natural AC, rock throwing, 40 Move
OR Huge, 37 Str, 14 Dex, 25 Con, +10 Natural AC, rock throwing, 40 Move
OR Large, 36 Str, 13 Dex, 23 Con, +12 Natural AC, rock throwing, trample, 40 Move
OR Large, 27 Str, 9 Dex, 19 Con, +10 Natural AC, rock throwing, 40 Move
OR Large, 1d4 Slam, 27 Str, 9 Dex, 19 Con, +10 Natural AC, rock throwing, 40 Move
OR Large, 1d4 Slam, 23 Str, 13 Dex, 19 Con, +10 Natural AC, rage, rock throwing, 40 Move
Level 14: Large, 1d4 Slam, 29 Str, 9 Dex, 21 Con, +9 Natural AC, rock throwing, 40 Move
OR Large, 1d4 Slam, 27 Str, 15 Dex, 19 Con, +11 Natural AC, rock throwing, 40 Move
OR Huge, 29 Str, 10 Dex, 21 Con, +11 Natural AC, rock throwing, 40 Move
Level 15: Large, 1d4 Slam, 31 Str, 9 Dex, 21 Con, +8 Natural AC, Rock throwing, 40 Move
OR Large, 27 Str, 21 Dex, 21 Con, +11 Natural AC, 40 Move, Burrow 10
OR Huge, 1d8 Claw, 1d8 Bite, 35 Str, 12 Dex, 31 Con, +13 Natural AC, knockdown, 30 Move
OR Huge, 3d8 Claw, 31 Str, 10 Dex, 23 Con, +16 Natural AC, rock throwing, rend, 40 Move
Level 16: Huge, 33 Str, 13 Dex, 23 Con, +10 Natural AC, rock throwing, 40 Move
OR Huge, 2d4 Claw, 2d6 Bite, 32 Str, 11 Dex, 24 Con, +11 Natural AC, rend, 40 Move
Level 17: Huge, 1d6 Slam, 35 Str, 13 Dex, 23 Con, +12 Natural AC, rock throwing,, 50 Move
OR Huge, 1d6 Slam, 31 Str, 13 Dex, 21 Con, +17 Natural AC, rock throwing, exploding rocks, 40 Move
OR Large, 1d6 Slam, 1d8 Gore, 27 Str, 17 Dex, 20 Con, +9 Natural AC, 50 Move, Fly 20
Level 18: Huge, 1d6 Slam, 1d10 Tail Slap, 39 Str, 15 Dex, 28 Con, +16 Natural AC, rock throwing, 40 Move, Swim 80
OR Huge, 36 Str, 17 Dex, 26 Con, +17 Natural AC, rock throwing, death attack, sneak attack, 50 Move
OR Huge, 1d8 Claw, 1d8 Bite, 48 Str, 9 Dex, 32 Con, +17 Natural AC, rock throwing, cannibalize, rend, 40 Move
Level 19: Huge, 1d6 Slam, 39 Str, 14 Dex, 23 Con, +14 Natural AC, 50 Move, Swim 30
Level 23: Huge, 1d8 Slam, 34 Str, 13 Dex, 21 Con, +9 Natural AC, rock throwing, 50 Move
Level 25: Large, 42 Str, 12 Dex, 28 Con, +13 Natural AC, 50 Move
Level 26: Huge, 3d6 Slam (8 with full attack), 33 Str, 12 Dex, 26 Con, +28 Natural AC, rock throwing, batter, exploding nodules, 70 Move
Level 30: Colossal, 2d6 Slam, 43 Str, 10 Dex, 37 Con, +29 Natural AC, rock throwing, crush, fling, grapple, trample, 50 Move