Tampa is a perfect organisation and has 6-7 key player, which have a winning DNA and are playoffs warriors (Vasi, Hedman, McDonough, Kucherov, Stamkos, Point, maybe also Cirelli)
They know when and how to step up, if it matters. This core carries the other players and makes them also shine. Remember last year third line Gourde/Goodrow/Coleman. When they are gone (with good contracts), most thought Tampa will be weaker.
But Paul, Perry, Hagel and Bellemare took over their role, even with better results.
Tampa has a historical strong core. Until Vasi, Hedman and Kucherov are there, they are contender.