He and Gott have remarkably similar peripherals. Unless someone can specifically point to something he does that induces a ton of weak contact, I think his ERA is simply luck at this point.
He and Gott were on the same team for much of last year, and the numbers aren't really that close except for the K/BB ratio, and even there Suero has the advantage:
Suero: 42.1 innings, 33 hits, 8 ER, 14 BB, 42K (1.70 ERA, 1.11 WHIP, 7 H/9, 3.0 K/BB)
Gott: 37.1 innings, 39 hits, 16 ER, 13 BB, 35 K (3.86 ERA, 1.39 WHIP, 9.4 H/9, 2.69 K/BB)
I haven't seen enough of either to say it confidently, but it looks to me that Suero's fastball moves a lot more than Gott's - which looks too straight. I'm concerned that he doesn't really have an out pitch, though. It's a bit early to tell, so we'll see.