It's certainly stronger! I just can't bring myself to field a
Tac squad under ten men. This is how I would run a similar list;-
DC_Ravenor wrote:HQ
Chaplain; Terminator armour, storm bolter = 130
Troops
Tactical Squad; 10 Marines, Lascannon, Meltagun, sarge with Powerfist and combi-melta, Razorback = 260
Tactical Squad; 10 Marines, Lascannon, Meltagun, sarge with powerfist and combi-melta, Rhino = 255
Tactical Squad; 10 Marines, Flamer, missile launcher, sarge with chainsword, boltpistol and melta bombs, Rhino = 210
Elites
Terminator Assault Squad; 5 Terminators, 2LC, 3TH/SS, Land Raider, Extra Armour, Multi-melta = 475
Heavy support
Whirlwind = 85
Whirlwind = 85
Total 1500
....Or you could drop all those powerfists and combi-weapons, take a Land Raider crusader and have enough points left over for another whirlwind, dakka predator or land speeder. Hope that helps!