In the following posting (and in its thread) it just has been proven that Cash Account is almost 5x better than Margin Account, regarding profitability, especially when trading Option Spreads, in that example using Vertical Put Spread (ie. ShortPut + LongPut): https://www.elitetrader.com/et/thre...ertical-put-spread.369011/page-3#post-5654948
The guy is a troll. It has posted nothing but China's propaganda crap and some twisted shit about margin accounts and other shit.
as long as you have the evidence, go report the fraud to the authority right away. Then the fraudster will be punished.