Instead of reposting, I "thanked" every post that I would have written myself. I have 300 miles on, with my 154 T3, 174 T3, and riding with/riding multiple Axys sleds.
Out of the hole, the Axys will get it every time, the deeper the more noticeable. On top, the Doo will run it down. But not by much. In dead even drags, me on 154 SLP piped T3 vs 155 SLP Axys, the Axys will get me be a sled length on start while I spin, I will catch up until we let off at 70 or so. The Axys guys had 50-75 pounds on me, between gear and sled. (They don't carry a shovel, let alone tools.) I was impressed that the Doo could hang with the latest and greatest Poo, and I was impressed that the Poo could hang with the Doo engine. Both great sleds. The Axys engine runs amazing, the clutching is spot on, when you touch the throttle it moves. The Doo not so much, but makes up for it with top end pull. If the dealer had a snowcheck in stock here I would be tempted to trade my 53 mile 174 T3 in.
My bud's 163 Axys 2.6 outclimbs my 154 T3 easy. Similar weight rider/tools, so he is lighter by whatever the Axys is lighter. From a standstill in deep against the face of a hill, he gets on top and goes, I wheelie and trench like my track is hungry for Chinese food. With a run, I don't think the difference will be as noticeable. Poo did good this year, we will see if they hold up. Next year will be as interesting to me as this this year is, when Doo puts something new out there.