Wampa omicron

I know there were a few posts about this a while ago but I never remember seeing any answers or confirmation that wampas omicron was working properly all the time or not. I have just lost with my r7 wampa to an Iden team, now I know this is not impossible but it was the way I lost that made me question if the omicron is not working. My wampa has 90% base tenancy tenancy plus 50% for howling rage plus 100% for cornered beast omicron. so 240% at start of the battle vs 58% potency on the Iden I was facing, after a few attacks im at 100% health and killing off the team but after I kill 2 of them on Idens second use of push forward I am hit with stun and healing immunity, then the debuffs keep coming and I'm dead. When these debuffs start landing I should have had maybe 200-300% more tenancy from the omicron so with idens 58% potency plus 30% from her unique she is hitting through 500% tenancy consistently. Either im missing something or the omicron stopped working halfway through the battle I can't see how this happens otherwise.