I think MANY players, both from AW and WB, found it hard to adapt to Aces High. I agree, though, the biggest hurdle to overcome for folks from AW, myself included, was avoiding the HO. Merge tactics and anti-BnZ tactics that work in AW meet with a faceful of lead in AH.
I'd say it took me about a month to finally feel as comfortable in AH as I did in AW; that is, to feel that I was as capable vs. the competition here as I had been there.
However, be cautious about using k/d to measure skill here. As in AW, it's an easily inflated statistic prone to favor those who 1) vulch, and 2) grab mega-alt and only target engaged enemies -- Zazening as I like to call it. It's a measure of certain abilities, but not the full range of abilities. Taking into account flying style matters a lot as well.
And yep, I'm +Dead from AW.
-- Todd/DMF