When you call like that in hand 1 it's pretty sick
but you can only do that if he never does this with like 88 for thin value which I guess most people won't do unless they're good
theoretically you should call here at least some of the time because you defined your range on the flop and turn as something of medium strength and a lot of people will be betting the river after they bet the turn because they expect you to fold your ace high or whatever

hand 2 is like the opposite, he has the ace quite a bit here, and if he doesn't he probably has a backdoor flush draw or something
I don't know, people just play these ace high boards retarded with AJ or something more than anything