Problem with placing Reborn so high is sales. Reborn averages around 550,000 copies sold while One Piece sells 1.5 million and Naruto sells 1.2 million. SSJWill4 conveniently did the math for us:
One Piece: 1,623,062
Naruto: 950,308.75
HxH: 850,477
Bleach: 739,569.5
D. Grey: 602,671.3
Reborn: 533,819.5
Gintama: 487,653
Reborn is comparable to D. Gray Man and Gintama, but not One Piece, Naruto, or even Bleach. Toriko remains a wild card in my opinion. Consistently landing in the top 5 should be a sign of a very strong series. Thus far Toriko has preformed very well in sales. But it remains to be seen if Toriko will actually surpass Bleach in sales, match it, or end up between D. Gray Man and Bleach in popularity. And it is to early to speculate on the answer. It should be noted that volume 3 of Toriko and Mago were nearly identical in sales. While Mago started lower, it's growth rate is higher then Toriko's, at least for now. I'm very, very curious how much Mago volume 4 sold, how much better then volume 3. I'll have an answer of Wednesday.
I personally take anime into some account when judging a manga's popularity. Anime does give a series a boost, both on the TOC and in sales. But I'd consider it a small factor. For the record: One Piece, Naruto, Gintama = really popular anime. Bleach, Reborn = not so much. There are things to be judged besides sales and TOC; anime, cosplayers, novels, doujin. Things get a bit to complicated trying to draw all those factors into judging the popularity of manga. At least for cats posting to a forum.