1 hand & 2 hand spreads

hello,

this question concerns spreads and ror.

i play my usual 1-20 spread,
however i cant afford this spread for a heads up game which requires min. 2 hands against the dealer for the solo player.

cvcx sim gives similar sd, expecation and ror if i play 2 hands heads up at a 1-10 spread.

is there anything else important that i could be missing apart from these 3 parameters? - the strategy seems to make sense to me

thanks for any feedback,

richard