That's a nice mock for showing how much talent is likely to be available.
In that scenario, Clemmings is almost certainly the BPA. He's a top-15 talent. There are some really good players still available (Danielle Hunter at 49, Malcolm Brown at 52, Maxx Williams at 53, Cam Erving at 55) but none better than Clemmings.
I like Arik Amstead quite a bit and would be fine with him at 62. But I'm not sure I don't like his teammate DeForest Buckner better (he goes at 79). And I'd be tempted to trade up for one of the 4 guys listed above. Lemmings-Erving would solidify the OL for the next decade. Maxx Williams would combine with Gronk and Tim Wright to make the TE position dominant. Brown is a real Wilfork replacement, and Hunter is perhaps my favorite DE prospect for the Pats (or co-favorite, along with Bud Dupree).
Similarly, I like Matias, but I'm not sure I like him better than Jarvis Harrison, or than some of the trade-up options. Jake Fisher at 75 and Buckner at 79 are tempting.
If I were to redo this based on BVA, I'd probably go with:
1. TJ Clemmings - OL - Pittsburgh. 4 position player who can start at LG and become a franchise LT.
*** Trade: Trade 62 and TB's 4th to move up in the 2nd round.
2. Maxx Williams - TE - Minnesota. Far better than ASJ. Gronk+Williams will be unstoppable. A 1st round talent in the late 2nd is too good to pass up.
3. Omagabwe Odighizuwa - DE - UCLA. I don't think he'll be available anywhere near this late, but in this mock he is. Too good to pass up here.
3 (comp). Jarvis Harrison - OL - Texas A&M. Tackle/guard hybrid. Or Matias, if still available.
4. Jaquiski Tartt - S - Samford, Durrelle Eskridge - S - Syracuse or Tony Lippett - WR/DB - Michigan St.
6 (from TB). Terry Williams - DT - East Carolina. Has the upside to be a Wilfork successor.
6 (comp). DeAndre Smelter - WR - Georgia Tech. Day 2 prospect under the radar and with an ACL tear.
7 (from Tenn). BPA.
I somehow think Manx may be ok with this draft.
I don't see some of these guys being available at those spots, but if that's the way it played out, it would be too good to pass up.
I think the take away message for me is that there will be some good players who slip through the cracks under any scenario, and the Pats have enough ammo to move around and move up if someone warrants it.