I have found an interesting line for Black and while White should be clearly better at the end of it, it justifies the comment 'dangerous for White!'.   
 
After 17.Qxe5 black can instaed play ...Nxg5 and then the main line goes 18.Bxg5 Bg4+ 19.Kc2 Rac8 20.Kb3 Rxc4 21.Kxc4 Rc8+ 22.Kd3 Qc6 23.Rac1 Qd7+ 24.Qd4 Qb5+ 25.Ke3 Qxg5+ 26.Kf2 Rd8 27.Qc5 

thx TomR.

I have looked at youre line and even better is the almost forced following line after blacks  2...f6!! i think.
17.Qxe5 Nxg5 18.Bxg5 Bg4+ 19.Kc2 Rac8 20.Kb3 Rxc4 21.Kxc4 Rc8+ 22.Kd3 f6 23.Bxf6 gxf6 24.Rxf6 (24.Qxf6? Qb5+ 25.Ke3 Qe2+ black wins) 24...Qxb4 25.Rd6 Qc4+ 26.Kd2 Qb4+ 27.Ke3 Rc3+ 28.Rd3 Qb6+ 29.Qd4 Qh6+ 30.Kf2 Rxd3 with an equal endgame

So it seems that this line shouldn't worry me in a cr-game

I am looking at a long theoretical line in this interresting opening to use maybe in cr-games.

1.e4 c5 2.Nf3 Nf6 3.e5 Nd5 4.Nc3 e6 5.Nxd5 exd5 6.d4 Nc6 7.dxc5 Bxc5 8.Qxd5 Qb6 9.Bc4 Bxf2+ 10.Ke2 0-0 11.Rhf1 Bc5 12.Ng5 Nd4+ 13.Kd1 Ne6 14.c3 (14.Ne4 d6 15.exd6 Rd8 16.Bd3 Bxd6 17.Qh5 f5 looks good enough for black) 14... d6 15.b4 Bxb4  here my books says that 16.cxb4 dxe5 is dangerous for white because of Rd8 threats. But what is whites problem after just 17.Qxe5 Rd8+ 18.Ke2 ??  I only see winning lines for white .