Selling out (WOW!) . . . can't really compare the two (IMO) for a few reasons I can think of off the top of my head:-
1) Price: LAST ACTION HERO was something like 12.99, if I remember correctly, with this almost 10 quid more expensive
2) Limited Edition: LAH was "Ultra Limited" to 2,000 with the new one . . . who knows . . . 3,000 / 4,000???
3) New release vs. old - Content: new steel not really an inferior release compared to the previous steel regarding content as both steels contain 2 BD 50 discs - difference being 3D film in the former and loads of new Extras in this one. Also not forgetting the Ridley Scott Commentary not found in the first one.
Artwork and title on the new steelbook are definite pluses though.
2) Finish: LAH had both embossing and de-bossing if I remember correctly and this probably has neither (?)
3) Film: LAH much loved almost cult appeal with one of the biggest stars in the universe in the lead role and not forgetting Charles Dance putting in a wonderfully insolent turn as Anthony Quinn's coloured glass eyeball changing right hand man.
I wonder if THE MARTIAN will ever be liked as much or even be talked about in 10 let alone 25 years (methinks not).