Is this Seinfeld autograph authentic?

[rdf8585]

Back in 2012, I wrote to Jerry Seinfield at a venue he was performing at. I received my item back signed in ballpoint pen in a week. It looks an awful lot like the signature on the top of his website (jerryseinfeld.com). But I've read some on here say his returns are secretarial, though I'm not sure if that's a more recent thing.

Here's my item -- thoughts?