You mean 4...Bb4 without the "+" since the c-pawn is in the way? You're referring to this right 1.e4 e5 2.d4 exd4 3.c3 dxc3 4.Bc4 Bb4? After this I always just go 5. Bxf7 Kxf7 6. Qb3+ and now Black's King is stuck out there with opposite colored bishops on the board. Also I've found you shouldn't trust computer analysis so much in playing the gambit, because if Black is better by say -.7 yet they're ahead by a whole pawn, that means their position is bad.
@Shellknight Who's to say you wouldn't have won those games without reading the article.? Anyway, if you can honestly recite those entire lines against 5.Nbd2 5.Nc3 and 5.Kf1 then congratulations. Like I said I tried to use those lines against a computer and got crushed, so yeah probably does depend on the level of player more than just following what Pfren's blog said.
My opponents seemed unsure what to do pretty early, so they fell apart. I wasn't playing danish "experts" (so to speak).
But yes, I usually lost or at least struggled (I'd accept even two pawns and just trust myself to solve the difficulties on my own). I don't remember all the lines... but it's a start!
Well that's even worse for Black, now they've only got the -.7 advantage but are up a whole two pawns.