Zulutrade is a great concept indeed, however it has few "little" problems.
99% of providers there (and unfortunately BEST RANKED) are DEMO traders. That means their actual risk is equal to ZERO. You risk real money - they don't. Not so funny when things go wrong!
IMO, difference between trading LIVE or DEMO is same like flying REAL helicopter or playing VIDEO GAME.
About the profit/pips - it really doesn't matter. What is more important is the way how they calculate max. DRAWDOWN - that's not correct at all.
And the extra spread followers must pay (e.g. EURUSD 3.5 pips, etc.) - that's a big joke I'm afraid. For example my costs are about 0.5 + 0.7 pips commission = 1.2 pips with my broker.
On Zulutrade, if the signal provider puts in 7 lots on one trade and another 3 lots on another trade, it would only calculate the number of pips. Pathetic.
Real traders play with different amount of lots, so each pip has a different value.
Yes the signal provider only has 24 trades, well 27 now, but I explained they have just joined collective2. They have been sending private signals for many years for 500EUR per month and the profits have been very good.