At first, I thought he was just over-emphasizing his accent to say AHNOLD's name, because ... well it's funny to make fun of some one else's accent with a completely unrelated accent. Or it could be. Because now I'm thinking about Schwarzenegger with a bit of Boston mixed into his standard speel.
As for the movie, somewhat unsurprised that it ended up being lackluster. Call my cynical (or don't, not like I care) but whenever a rated R 80s flick shows up with a new PG-13 rating, it smells like money grab. The original had heaps of over-the-top Schwarzenegger violence, tons of swearing and boobs, occasionally 3 at a time. A PG-13 remake just smells like "if you tone all that down, we'll sell more tickets"
Also completely agree about Colin Farrell. The movies where he's worked best, imo, have been things like In Bruges, Horrible Bosses, and even the hilariously bad Daredevil. Generic leading man #12 he isn't.