Newbie question:

So, I started to mine LBRY (ccminer2.0) on suprnova pool with 2 TI's and my hashrate is about 990 MH/s. I checked on whattomine calculator my estimated reward and it should be about 23 LBC/day.
Well, for me its look like really inaccurate estimation, because I'm mining so much less than that.
Is this calculator wrong or am I doing something wrong?

Thanks for reply.