Though being sarcastic.
I must honestly say their are about a good number of games on the Wii that are more fun then their HD Counterparts. Or at least seem that way to me.
MLB Power Pros has been better then any baseball game. (No motion controls by the way.)
No More Heroes is a lot of fun and has a story well above any other hack/slash game i've ever seen.
Mario Galaxy is the only platformer worth playing really.
In the end, it seems when you spend less of your time, budget and thought on graphics (and still put forth a high effort) the rest of that effort gets added to things like story and gameplay.
It's got nothing to do with HD graphics, but that HD Consoles focus more on graphics, which bring a detriment to other aspects of the game when you have a budget.