The problem is
1) Alabama and Clemson are a world above everyone else and
2) Virginia Tech was always a flawed team, a "perfect" team recordwise playing imperfect football. Virginia Tech week 1 was fine offensively, but had problems on defense. In week 2 their offense sputtered against Delaware yet they were still able to win due to ST returns and defense. Week 3 against ECU, they fell behind by 14 before dominating. Week 4 continued the narrative of the struggling offense, but again it was ODU so these weaknesses were kind of hidden.
The game yesterday exposed everything out in the open. Virginia Tech does have problems offensively which haven't been fixed from game to game. They were made a lot more apparent by the efficiency of the Clemson defense which didn't allow much. VT's offense was basically stifled and the defense was being lit up.
That being said, that was probably the toughest game VT had to play all year. But it was the worst effort by far under the Fuente era. Fuente's teams at VT often fell behind by double digits (ECU, ND, Arkansas in the Belk Bowl, yet always found ways to win. Even in their last meeting VT fell behind by double digits before rallying to make it close. But it was apparent that there would be no such rally yesterday. Just an ugly game to see in person.