No, someone you meet on the street is different and they are not paying admission to the sauna or having to stay there a min of 3 hours, take the metro to get there, etc.
i would not, IMHO, worry or attempt to pick up guys outside the sauna scene, until you have more experience in Brazil. I recounted back some years ago on here 2 acquaintances of mine from LA who did not take my advise in this regard and lets just say they did not have a good tine in Rio!