I've seen a couple of pixies at my track and one is faster than anything by a couple mph, whereas, I thought the other one was an MT12. I believe, it depends on tuning and break-in a lot because I've seen some go fast and some not-so-fast.
If you can get it going fast, I've never seen a 5 port turbo anthing (stock from box, not touched by a dremel
) go faster. Low and high end are powerful.
That is what I have noticed without owning one.