That's a great question and thanks for stopping by. Sorry for the very delayed response. I was on holiday and wasn't really able to respond properly.
So in regard to your question....
To say that the ES is easier to trade without adding additional caveats would not really be doing you or anyone else who reads this any justice. It's not that the ES is easier to trade. It's that the ES has a bit more structure to it's moves which is do to a number of factors such as liquidity, regulation, and the market participants who essentially make up the market. In forex the entities that make up the primary players are the banks and they are the ones who establish what a particular currency should be trading at. They are the primary participants who make up the market and when they decided to open up the forex market to small traders for speculation, it was like moths to a flame for all the scam artists to come in and sell the dream and then attracting all the small under capitalized traders to come in and open an account with $500 bucks to go make a million.
The ES or any market for that matter still has it's own nuances. Each market moves a certain way. The markets with thicker liquidity enable a trader to monitor areas of support and resistance down to a few ticks, as opposed to thinner liquidity markets that may span those zones a little wider to maybe 6 or 8 ticks. So as it stands for now I am cutting my teeth on the futures market with the ES which runs somewhere in the middle as far as liquidity is concerned. Will I stay with the ES? Maybe, maybe not. But for now I am studying it's moves and characteristics and applying my methods to the market in order to get a little better every day.
Sorry I know this isn't a clean cut yes or no answer, but that's not how the markets work. When you understand better how the markets work and how the players who move the market conduct their business you will see that there is no clean cut one size fits all answer to anything with regard to markets.