t. samefag, a.k.a. the literally one guy who makes these threads
TCW is good shit. Started off rough, that's not a secret. Has lame episodes throughout the series (sisters' arc in the last season says hello), that's no secret. But all in all? Good shit. Phenomenal visuals in the later seasons, legit storylines with good characters, depth given to existing characters beyond the capabilities of the three prequel movies. You can tell it was crafted by people who care about the franchise and its fans.
Now, is Genndy's Clone Wars bad? Of course it fucking isn't. It is stylish, has some amazing (over the top, yes, but still amazing) battle sequences. Battle of Coruscant? Hell fucking yeah. That first battle between Ani and Ventress? Inject that shit right in my veins, my dude. Grievous introduction? Holy shit, yes. Is there stupid shit in it? Yes. C3PO "stripping" was retarded and out of place. Anakin's voice actor was pretty bad. But that's Star Wars. Did it have me glued to the screen when I was a kid back in '04? You can bet your sweet ass it did.
The good thing about canon, is that it's subjective. I like both CW and TCW. I consider them canon for myself, despite the brief contradictions towards the end. You just gotta enjoy what you enjoy, man.