As you are using daily bars and not using any TMFs or more sophisticated logic, it's normal for results to not differ very much.
If you were running and intraday system and other kind of logic, it'll surely differ.
From the manual, http://zorro-project.com/manual/en/mode.htm:
TICKS should be used when trades enter and exit at the same bar, when stop loss, or takeprofit distances are small, or when trading is strongly affected by tick functions or TMFs.
