Hello. First I must say I am very impressed with Zorro. It seems to be too good to be true....
I am testing Z12 on Metatrader demo (probably microlot account because can open 0.01 Forex position). It seems that Z12 works unbeliable good since start of testing. But I dont understand why there are opened cca 10x bigger positions in CFDs than in Forex. For example Oil, US500, GER30 etc. are opened in ones (1,2,3). That means that average daily range for these positions are cca $100-$400. But Forex positions are opened only in 100ths (For example 0.02, 0.03 etc). These has ATR cca $10-$50. Is not there some mistake? I worry that all profits/losses will be mainly due to CFDs, and risk will not be equalized too well.

In FXCM account it seems ok, there are CFDs opened in ones (1,2,3) and Forex positions are in tens (10,20...) which gives me the comparable average daily range (and margin too).

I think CFDs are not offered in micro lots, but only in mini lots. Micro lots are for Forex only. Thats why the lot sizes are very different between Forex and CFDs.

Yes, it is true. There are no micro CFD lots. But then CFD positions sizes 1,2,3... are too much (and dangerous risky and should be avoided) or Forex microlots 0.01, 0.02, 0.03 too small. I do not want my account $3000 to be erased, so I do not know wheather not to turn off CFDs (because too much risky) completely.

Position sizes are only determined by money management. It does not matter whether an asset is Forex or CFD. The lot sizes are indeed different, but Zorro normally compensates that.

Run tests for determining the best margin setting for your $3000 capital. I would not disable CFDs, as they contribute substantially to the profit.

FYI, here are the typical asset contributions to the Z12 profit, in percent - look in the "Wgt%" column: