In Polish nightclubs Spanish/Italian/Portuguese (etc) boys seem to be quite popular among Polish girls.
That is what you see as a northern European. The reality is quite different. While many Polish girls find the dark looks attractive, they are often very skeptical about dating Mediterranean men, considering them to be players, cheaters, etc. Plus, another reason why you see that is because southern men tend to be more active in terms of approaching random women than other men.
I am just saying the the spainsh man has alot of competion in the night clubs of poland.
Yes, that is true. And given that Polish girls in general aren't the pickiest, the competition could be almost anyone :)