Pretty sure Bazaar is better than a simple +1 cards, +3 actions. The latter is simply playing 2 Villages; the former is a Village and a Peddler.
I know you didn't
say anything about cost comparisons, but that sounds an awful lot like cost comparisons so I'll treat it as such.
Well, that isn't necessarily that accurate of a comparison, since Peddler, Bazaar and even Poacher all have very different roles. Peddler is a payload card that you can buy a ton of for free once you have your engine somewhat running, Poacher is a card that helps you skip Silver in the early game, and Bazaar is a $5 component card that helps a little bit with economy and payload. That's why Poacher is accurately priced at $4 — you want to be able to open it, but getting two of them in the opening would make it too trivial to skip Silver entirely. In the meantime, Peddler is accurately priced at $0 (which is what it usually costs when you actually buy it), because you can't open with it anyway, and it would be pretty insufficient for its intended purpose if it cost $4. And Bazaar can't cost $4 because then it would be crazy good at Poacher's role in addition to being pretty good (but not necessarily broken) at its current role.
On the other hand, having a Village and a Peddler is very equivalent to having Bazaar, whereas having 2 Villages is actually better than having one top-of-the-shuffle Bustling Village, because those two Villages will be spread out throughout the entire deck and, thusly, have a higher chance that at least one of them will line up with terminals.
So I guess what I'm saying here is that Port is actually a stronger effect than Bazaar, even if you ignore the fact that it's also cheaper.