Lets see... Gearbox has ported Halo to PC, ported some Valve stuff, made Band of Brothers series (which was really good while still under Gearbox's control), now has Borderlands out (which is awesome)...
Valve... did some cool games eons ago (let's call them "DOOM remakes" because yeah, that's what they were), and published a cool game that they didn't create (Portal), and recently made a game for the X360 and PC (L4D), that they repackaged with some new level and character content and slapped a "2" on the end of the name.
Gearbox just released a fricking awesome game on both X360 and PS3, and Valve... made a pretty good MP game on "two" platforms largely touted as being "easy" to co-develop for, then made a content sequel (i.e. a full-priced map pack) that fans were in an uproar over, after having purchased basically the same game last holiday.
I'm thinking the Gearbox guy knows his hardware a LOT better than the Valve guys do, these days, especially given all the great PS3 games we see these days.
You guys treat Valve like they're the Beatles or something... or like they were Blizzard, or Naughty Dog, or Elvis. When really, they're more like the Big Bopper -- made a little something great eons ago, then died in a plane crash and came back to life as businessmen posing as game developers.