Trust me, he's better
It is better indeed, it can be throned at least. But still, it's a terminal at best, and it seems you need to work a bit to have it in your deck.
Btw, have you tried dropping that 4 cards limit?
Protector easily produces $3 which is good. In an engine, it reaches $4 roughly half of the time which is, as AdamH would express it, super-bonkers amazeballs. Such a card should cost at least $6 if it wasn't a Traveller. I capped it at 4 cards lest Protector is broken.
This will be useless without trashers in the supply. You could fix this either by adding a weak trashing ability (e.g. 'When you gain this, you may trash a card that is in your hand or in play), or else having a setup condition that puts, say, 10 Coppers from the supply into the trash.
Compare Graverobber, Rogue, and Forager, all of which are cards that interact with the trash but also put cards into it.
Robber Knight, which is available without trashing, trashes cards. It also is pretty good. Allthough, as Petty Lord is a weaker Peddler now, i think it could cost a little less.
Yes, I was so clever to make Robber Knight always available. And RK makes the other Travellers available if nothing else does.
Some good player on the forum once denounced the general conception that $4 was an appropriate price for Peddler because the effect was pretty strong for $4. DXV didn't make a vanilla Peddler for $4 because it would delimit the design space for all Peddler variants, e.g., if such a card existed, Market would look very weak. With that said, I think the current Petty Lord is rightfully priced at $4, especially considering what powerful cards it can be exchanged for. You wouldn't normally pay $2 for a Page that's not a Traveller, would you?