They're all broken; they all have glitches, and Nintendo has this immutable fanbase that wants to **** every game they get their hands on, including the Mario Kart series (i.e. Snaking in MKDS).
Thought I'd just comment on this, but saying that only the Nintendo fanbase exploit glitches is very biased and untrue. A lot of gamers, as a whole, try to exploit every advantage that they can in order to win. It's what makes Marvel Vs. Capcom 2 one of the most unbalanced games ever created.
Also, regarding Snaking, the fault with that lies with the same fault I've had with Mario Kart since Double Dash came out, namely Item Gimping. You could Snake in MK64 as well, but it didn't matter because the Items could still [tornado fang] you over and [tornado fang] you over royally. If you were in 2nd place, you still had a chance to come back, except on courses like Rainbow Road, depending how far ahead the opponent was. However, when Double Dash came along, 2nd place had little to NO chance without the help of 3rd-5th place getting the Items to screw over 1st place. MKWii is a flawless example of the issue of Item Gimping. When the programmers decided that 2nd place would be cursed with such items like Cloud AIDS, the game has a SERIOUS problem. The items are the main problem with Mario Kart since Double Dash. Snaking wouldn't have even been an issue, which they wouldn't have had to take away in MK Wii, and the Bikes wouldn't have the clear advantage that they do in MK Wii if the Items weren't so God Awful and pussified. This is why no Mario Kart game will ever be as good as Mario Kart 64. Ever.
Regarding Brawl, I think it's definitely the best out of the three Smash Bros. The levels are simply awesome, the soundtrack to the game is hands down one of the best gaming soundtracks ever released, and the characters are very well balanced overall. Granted, Snake's priority and strength and uncanny, but it's absolutely not unbeatable. It's definitely not as bad as Sheik's insane speed and power in Melee. Also, yes Metaknight has that cape glitch, but the majority of tournaments (if you actually go to them) will disqualify someone who exploits it. Besides, you simply don't play someone who exploits that glitch, just like you don't play people who use the Cable, Sentinel, Etc. team in Marvel Vs. Capcom 2. That's all there is to it. My only real complaints with Brawl are slipping & the removal of characters. If you're going to keep such Clonage as Falco, Toon Link, Ganondorf, and Lucas, then there is no reason to get rid of Roy, Dr. Mario, and ESPECIALLY Mewtwo. Yeah, I was sad when Little Mac, Krystal, Blues, and other characters I wanted in didn't make it, but seriously, I've gotten really good with at least 8 characters already, and there are still more I want to learn, so that honestly doesn't bother me in the slightest. I'll just await the newbies in Super Smash Bros. Bitchslap, sometime in the Future on the Nintendo Ball Z.
It took me 6-7 years to finally get tired of playing Melee on a frequent basis, so god only knows how long it'll take me to get tired of Brawl, a game that is so vastly superior to Melee. Except for the Dragoon pieces being against me, I have no issue with Brawl whatsoever. I don't blame Brawl for the Lag. That's Nintendo's fault more than the game itself. Perhaps it'll be fixed in the future and perhaps it won't. Either way, I'll still be playing it over at Lou's house and Online with you guys for a long long time now.
At least until online Virtual On: Oratorio Tangram or online Mario Kart 64. Then, I'm done with you all!

I take it people are still reeling from last night's marathon of Smash. 
LoL, no chance. I just got finished watching The Two Towers, plus replying to this post! I'll be right on as soon as I'm done!

I never thought I'd have more STAMINA than the most flamboyant PB. 
Haha, see above.