yes if its 10 we beat vs 9 that beat us, jamming is just marginally better than checking behind. and betting smaller to get called by maybe 15 (probably way more) combos is likely higher EV (maybe 70% ahead on a 1/2 pot bet > 52% ahead on a 3/2 pot bet).
Then you have the problem of playing vs a raise.. you say bet/fold but he might check raise bluff sometimes ?! (of course he will not do that often. but if he check raises just 6 value combos, you need like 1 bluff combo to be able to call, which is possible, like a frustrated 6
5
or so).
So betting smaller is not too easy to evaluate. But if jamming is very thin, it's a good alternative, yes.