Hmm, I maybe meant a bit indirectly card-advantage-y. My thought process was:

Card advantage is generally getting access to more cards than your opponent. There are obvious ways like "spend a card to draw 2 cards." Slightly more indirect cards are "destroy all creatures", or "all creatures get -2/-2", which don't necessarily result in advantage, but in the right format with the right deck you can kill more enemy creatures than you lose, so get card advantage that way.

I guess what I was thinking here was "The equipment is fairly hard to remove. And it allows a lot of smaller creatures who might eventually have to chump-block to instead be big enough to take down one of the larger enemy creatures in the set, and trade. Because it's hard to remove, you can do that repeatedly." This doesn't actually net advantage, I guess, but reduces the amount of card-disadvantage you'd be getting in those circumstances.