Someone posted a site you can compare hashrate recently. Very interesting.

Dash is way above Eth and Ltc. XMR is barely noticeable on this scale. Still a way to go to catch up with bitcoin and bcash however
This chart is totally useless. These are all different PoW algorithms and not comparable in any way. For example my GPU can mine SCRYPT (Litecoin) about 650 khash/s but get only about 300 hash/s for CryptoNight (Monero). And for X11 (Dash) I got maybe 1,5 - 2 Mhash/s IIRC (it was a long time ago).