I'm incline to agree with the review. There are a few that gets a chuckle out of me, but otherwise, it's just predictable humor. As Chad stated, it's like seeing deleted or rejected Family Guy cuts. Cats having a meeting until dog crashes in; seen it coming a minute shorter then how long it played, Scottish man talking about movies because "lol accents are funnie."
The only part of the review I don't agree on is the Mario saves Princess Peach. I honestly don't get why people (at least according to youtube last I checked) view this as the most funniest, popular short. It's not. It's another one of Family Guy-ish long rants over a subject I've seen fans do for the past seven plus years.
I'm not saying Seth can't be funny. When he's at his top game, then holy cats, he can punch out a joke. But when he either induces a tiresome running gag or a joke I can see coming a mile away, he does it poorly - much of what Cavalcade of Comedy composes of. Out of the three currently airing MacFarlane series, this one is the barrel of low thus far (no idea how The Cleveland Show will fair).