Its very simple:
They run basically the same specs hardware wise (minus wimax and larger screen).. How in the WORLD could the incredible be better? It makes absolutely NO sense what-so-ever.
You have to remember, these sites have agenda's and they'll push them. I've never understood giving a review unit to a site that's largest advertiser is a competitor.
Example:
Phonedog.com---I do enjoy some of the reviews, but this is one of the most BIAS sites on the planet. They actually SELL services on their website. I can honestly say, in the past year Noah from Phonedog has gotten better, but before it was pure insanity. The items he would push and review were nuts. You could have the most garbage phone on the market and in Noah's eyes, it demolished all Sprint counterparts. (They must not make the commission that Verizon and ATT give them)
I was an editor for mobile and tech sites for years, in-fact owned my own (bornmobile.com) and I can tell you one thing, companies LOVE to shove things down your throat. "Freebies if you promote this product" or "Hey, here's a free iphone with service for a year, you know what to do". I'm not kidding you. Its probably the most unknown corrupt aspects on the web.
I would honestly take what you get with a grain of salt. It makes no sense what-so-ever that the incredible would be better. I mean this is common sense. For a site to give it a lower score wouldn't be base on performance, but based on aesthetics. Which is possible, but for them to say it performed less is rubbish.