My guess? MA/SD will be better single target damage, and more stylish overall. 
BS/SD will have better survivability thanks to parry, and somewhat better AoE thanks to having a cone or two as well as a PBAoE. I don't think there'd really be too much end difference between them, though of course you'd notice the lack of consume compared to /fire.
@MuonNeutrino
Student, Gamer, Altaholic, and future Astronomer.
This is what it means to be a tank!
BS has access to the Achilles' Heel proc, which makes it better than MA overall IMO.
Mains (Freedom) @Auroxis
Auroxis - Emp/Rad/Power Defender Pylon Video Soloing an AV
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So I was wondering if anyone had any idea how MA stacks up now, especially compared to BS/SD. I know that Katana does slightly better than BS, but you can't go shield with kats.
I took an MA/fire scrapper to 45, and stopped because the survivability of FA turned me off.
How does MA/SD compare to BS/SD? I'd think that end use would be an issue, but overall would the damage be better?
Anyone have any numbers or speculation?