Determinate seed life different?

[Boutique Tomatoes]

A quick search didn't show anything, so I thought I'd ask here. Is the seed life of determinate varieties different?

I usually get 90%+ germination on tomatoes, but this year I decided to try some early determinate varieties. It hasn't been so long I've given up on them, but so far only 2/3 of them are up, where the indeterminate varieties are at 91% germination so far this year.

I'm guessing since they aren't grown and traded as often the average seed age on the determinates is probably higher, but most of them were not marked as to the year saved so I can't be sure. I'm just trying to come up with a theory.