True "High end" air rifles have triggers that are every bit as good, if not much, much better, than those found on powder burner rifles costing the same or much more.

You just cannot find a demonstrably better trigger than the one on my FWB 300s 10m match rifle. The one on my Anschutz .22 LR target rifle doesn't break as nicely.

As for medium priced rifles:

With 15 minutes of work and about $1 for some nylon washers, the trigger on my $325 refurbished Marauder has just a barely perceptible hint of creep, and breaks at just over a pound. As it's a two stage trigger, it's still manages to be safe at this trigger weight. I could spend some time and see if I could get rid of the creep. But for a plinker - why bother?

The trigger on my Diana 48 is much heavier than the above two rifles. Breaking at about 4 pounds. As was sent from the factory. No creep...

Scott