If you're talking about the Worlds, I think you have to look at the results more closely - there were two Caps in the top 10 until the breeze really came up... as someone over 40 and feeling my age lately when racing against whippersnappers, I think the big air is when a bunch of points started getting added on. Goodall and Daniel were both putting up great results in the light to moderate stuff. Both are, shall we say, veteran competitors? Daniel was also sailing injured. I think that the proportion of Caps in the top 10 before the breeze really came on was about right considering the numbers of each design in the fleet.
Anyway, I'm not intending to offer excuses for one design over another. I think that most designs are on very much equal footing right now, with the team being the greatest factor in how a particular platform performs. The Cap has won Worlds against the Infusion... and vice versa. I'd also say that the Infusion (a fine design) has rider teams whereas the Cap does not.