This is standart open on BN, sometimes on CO. But as standart is fold to 3bet. With double-suit or no dangler in hand you should call though.

Actually, when the 3B range becomes very tight, you have more incentive to call. 

- You're 38.25% against AA

- You're 36.57% vs top 5%6h

That might seem counter-intuitive, but it's pretty logical. When he 3B mostly AA, his outs overlap little with yours, and you have a good read on how his hand flops. The worst 3B range for your type of hand is AA + premium suited/coordinated hands that dominate yours. Against AA only, you do better.

As for the default, I don't think you are giving up much by folding to the 3B against an unknown in a micro limit game with high rake. But you should train yourself to become comfortable defending hands like this heads-up and in position. Raise-folding HU and in position is not something you should do often in PLO, especially not with an unpaired, suited and decently coordinated hand.

At SSPLO this is an easy call for me, against a 3b.  Unless I have reads that villain 3bs wider than the premium hands (5%) I am happy to call and play a pot in position with a semi connected hand.  It's when villain starts to widen his 3b range and include good broadway card hands that I would consider this hand a fold but I do not see that a lot at levels under 50PLO.

Also while your hot and cold equity is only 35-40% you are going to be able to  take away a lot of flops and turns from villains with narrow ranges.  I would even float here if we change the Js to the Jc since I think that we can bluff a lot of turns, improve with a lot of BD draws.

SSPLO you got players who are scared of the nuts and fold so wide, and others who could't spell nuts properly and over value weak hands that you can value bet wide against.  Make notes, develop reads and play all the pots that you can comfortably in position.