OK ! That last question is right up my street.
I was brought up on 7card and played all the 'funnies' as a young man.In the 80s I played London Lowball (7card).
Prior to playing on the net I had never played '8 ceiling' games and had long given up 7card, preferring flop games.
Nowadays I play Omaha and HiLo8, mainly in Tourneys but occasionally cash Omaha on BF.
This is my opinion.......The pool of players for both these disciplines is much smaller than for NLTH and since the changes in US law, is even smaller.
I thought therefore that only specialist players would be playing and that the standard would be very high.This is not the case and certainly not at the lower levels at which I mainly play.
The case is that there is an enormous difference in quality between the best players and the worst in all three formats .....Omaha both Cash and Tourney and Tourney HiLo.
A couple of factors apply here.The cash games at the low levels attract a lot of newcomers to Omaha and they are dreadful.Also present are one or two sharks who must do very well.
In the Tourneys there is also the factor that some of the more skilled technical players cannot play Tourneys and are unused to Pot Limit.The latter applies less since it became less of an American based field.
The good players at HiLo8 are really good and I see a very few names up in lights all the time.I have enjoyed great success at HiLo8 through rigourous card selection before and on the flop.This takes me a long way in tourneys and I know how to move up on the FT.Unfortunately I dont seem good enough to win one but have had a few seconds in MTT.
You really need to know how to play but can read stuff on the net and play at the low levels to improve.