SATA is directly connected to PCIE so there are no latency issues. PCIE cards still have controllers onboard so it works about the same. Nearly all PCIE and M.2 SSD perform the same as SATA SSD in random transfers. Only some single models are faster ( but not much ) in random operations.
The same all SSD like Revo are like couple of SSD in RAID so except higher sequential transfers everything else is the same as for single SATA SSD.