if you look at their careers, it's pretty evident that Tavares and Stamkos are ahead, and shall remain so. You're just looking at it from a "2018" persepctive, but fail to acknowledge their past success.
Hedman has four top ten in norris(1 win) and one AS1 and one as 2, including a top ten in calders also.
Tavares has two top three in Hart, one AS-1, a top ten selke finish and a top 5 calder finish.
Considering Tavares is going head to head with McDavid, Malkin and Crosby for AS's, his finishes are quite strong.
Doughty has two second AS and two first AS, 8 top 10 in Norris (one win), and a top five in calder.
Stamkos has two second team all-star, two richard, five top-11 in harts, and a top 9 in calder.
Considering Stamkos is going head to head with McDavid, Malkin and crosby, his AS are pretty good, top it off with his Rocket record against Ovi ? ****.
Keep in mind its easier to be an AS nominee as a defender than it is as a forward, especially as a center, which is the hardest competition throughout history.