Hi ccaggiano - I don't honestly think you can make broad general conclusion on germination rates between heirlooms and hybrids. Too much depends on the variety and seed quality.

Assuming good, fresh quality of both and equal conditions, I find little difference between germination rates/speeds, hybrids to heirlooms. But I do find a BIG difference from variety to variety of seeds regardless of whether they are hybrid or heirloom.

EX: cherry/grape varieties often germinate faster than do beefsteak types, early varieties will germinate faster than late season varieties, and RL varieties will often germinate faster than PL varieties.

So, given the info you provided I wouldn't give up on any of them yet. Hope this helps. ;)

Dave