Bizarre choice of surface, as others have mentioned. But maybe the decision was made before the start of the season? In which case, Kubot hadn't become the stronger player he is now, and maybe the Poles were trying to favour Przysiezny's matches (as he is a decent indoor player)?
Undoubtedly a tough tie, and one of a couple to keep a particular eye out for over the weekend.
Poland with the strength in depth, but Finland still with the ability to win key rubbers (maybe Nieminen x2, and Kontinen). Poland doubles pairing obviously strong on paper, but Fyr/Kow aren't reliable.
Also may not be to Poland's advantage that Kubot did so well on the South American clay court swing (singles and doubles). Might be feeling a little tired, and he will only have a few days to adjust from clay to indoor hard courts.