I have 14 tier 2 biochem recipes by the use of RE. On one Anti-Armor/ Endowment/ Fervor/ Supremacy/ Tempest/ Vehemence/ Rampart and SEVEN Commander's/ Leadership/ General's. And presense prefixs have been RE by the first 6 times, the second - 1 time. Probabilities of new recipe creation are different or its my bed luck?
I don't think it can be just bad luck. It's either scripted that way or bugged to happen that way. A little over half of my armstech t2 discoveries are +presence.