It absolutely isn't the current iteration of TW/BIO. And it wasn't the one before the nerf either. I was pulling low :50s pre-nerf TW/BIO. Ratch and I are pulling low minute times post-nerf with it. It wasn't and isn't TW/BIO. TW is in a really good place right now, but it sure isn't top dog for melee DPS. I can state that with 100% confidence.
I've done runs with my Crab under :30s with Lore (Banished Pantheon) out. A Thugs/Cold MM with Heat Loss summoning two Gang Wars with T4 BP would drop a pylon faster than that I am guessing.
I'm with @Ratch_. Fpr melee, I'm guessing a FM/Bio/Snipe damage and recharge capped would drop it in less than 40-50s. I got runs under a minute with no outside buffs with my FM/BIO/Snipe scrapper on brainstorm.