[Guruman]

A humble view from my perspective over here in the BB:

My standard play from the BB against a SB openlimper is to raise any two and autobet the flop if checked to (folding trash to any aggression). This costs 3sb and nets us 2sb when it works, so it has to work more than 2/3 of the time to be profitable if we fold the turn. If we fold to a pf reraise (which I tend not to do) or a flop donkbet (which I will do) then we only risked two small bets.

It also gives us the advantage of seeing most of the hand should an opponent call the flop bet. Sometimes I'll catch a wonky two pair that I can call down with, but I'd say more than 85% of the time I just win the hand on the flop.

I think the reason for this is that a small blind openlimp tells us

A)I don't think my hand is worthy of attempting to steal your blind (because it cant stand up to a reraise)
B)I'm trying to get lucky on the flop out of position (and I'll fold if I miss)
C)I don't care about taking initiative in the hand
D)I hope you'll let me see this flop cheaply
and occasionally
E)I have AA and I don't want to scare you off just yet.

If you want to get me off of this play from the sb, you'll have to spend 3 small bets (calling two preflop and the flop lead, or a pf reraise) to try and take my two SBs.

The difference is that you're oop and don't have a hand that you would just raise with.

Now don't get me wrong, I'll try an openlimp against weak players that will let me to the flop cheaply because they are more likely to suspect that I caught with a donkbet. But I won't go near it with someone who does what I do.

IMO an openlimp from the sb is a sign of extreme weakness, and it should be punished as such.