Pedrop says:
.. What would happen if the he would be the same result ...
In this case? It is a tricky one.
Depending on the fiction:
You might have to try again. It could make sense in this situation that you realise your approach is wrong and can come from a different angle?
You might be able to try something else. You might realise that you can't sneak up and give up, no harm, no foul (aside from a lost round, maybe?).
You could not succeed in sneaking up on him, but he also does not get to act before you can try something else? Not sure that one works here, though.
Pedrop says:
But I just realized that the guy can't have worse result than Raf...
Though he could get a match. He could actually get worse if he was untrained in Recon, and if his INT was worse than 0. Both are somewhat true, making him roll at -2 and -1 (you can learn stuff about the NPCs from these rolls).
He beat you by 6, so it is not just him that gets to know you are there, his whole party knows. I figured this was better than giving him a bonus to Initiative (you are not surprised or anything), and definitely better than a free shot, right?