Your thoughts are scattershot and I'm on my lunch break so i'm not reading all of it, but basically Giant Bomb actually does a little better than Kinda Funny does (i'do imagine it's just because they've been around longer), but they spend their money differently and their audience is different which helps them determine what they spend money on.
Giant Bomb recently upgraded their studio equipment and it should not be underestimated how expensive that is.
Its just different audiences and therefore different goals and stuff. Plus GB works under CBSi so it takes time to get the ball rolling on stuff. KF just gets to do what they want immediately. It's a down side to being owned by a corporation, but a plus is Giant Bomb can do videos where they sing entire songs and not have to worry about liability or having the video pulled down. Just some examples.
Anyway, different places... different priorities. Both seem to be doing fine. You'd probably be surprised how much Giant Bomb makes a year (I don't know the number anymore but I do know they have well over 30,000 subscribers so you just have to do the math on that). =)