Real speed at Mining Pools

[manukit]

Hi, i have been testing the last couple of days 3 mining pools: Minergate, Crypto-Pool.fr and DwarfPool.

I am mining at about 360 H/s per worker, but every pool shows a lower speed. Minergate sometimes even half of my real speed, and paid me less.
Dwarf´s seems pretty accurate so far.

So my question is: What is the real speed? the one i see on my worker, or the one stated in the mining pool?