Thats why exist hybrid build, you should search a little bit more.
Furthermore, you will find a video showing SM vs all classes..xDD...
same works for cleric... full spr cleric can beat crus
Hybrid builds dont help SM vs cruss.If u go for hybrid u still lack dmg and at the same time u lack tankability.Im not saying u have 0 chance to beat cruss,but your chance is low.Lemme put it this way,on lower lvls and lower gem lvls your chance is good,but the more gems both you and cruss have and higher lvl you are,your chances to beat cruss are going down.U are delusional to think that anyone but OP champ can beat cruss.There is reason why from ToP1 days people have been crying for cruss nerf.
PS if u think cruses are not OP try 1 vs 1 cryloud,or any of the top cruses with any sm on server.Results will be predictably one sided.