It's true that OpenSUSE has much earlier (better?) KDE support than Debian, but turning the discussion into a Debian vs. OpenSUSE would be bikeshedding*. My grief is not that that OpenSUSE has KDE earlier, but that _Windows_ has it earlier.
*but I'm pretty convinced OpenSUSE is lacking stuff that Debian has; after all, I left OpenSUSE and got Debian some years ago precisely because it was missing some packages Debian had.