Originally Posted by cslone
It's not particularly about FTP, it's about w/kg. A 180lb rider would have a FTP of 304 to be right in line with you. What you probably lack is neuromuscular power, which is your 5s, 10s, 30s power in a sprint, so you need to work on that.
It really depends on the situation. If you start two guys who are each at 4w/kg next to each other, say one at 60kg and the other at 75kg, on a flat, and then have them race (side by side, no drafting) on the flat for 20k, to a climb 20k long, and then up it, the bigger guy will win every time. 300w on the flat vs 240w is a hell of a difference. And then, because even if his w/kg were to somehow drop on the climb, he's still far enough ahead that it shouldn't matter.
Basically, w/kg is only really applicable for climbs. Raw wattage is a good deal of the game. You have to get there with the main group to have a decent chance of beating them up the climb.