Virginia Tech: Virginia Tech had to replace all their receivers last year because of graduation, injury, and suspension. They had to scramble to put together a starting lineup of all freshman. They learned on the fly and progressed and improved as they went along.
Virginia Tech is led by WRs Danny Coale, Jarrett Boykin, and Dyrell Roberts. They are all rising sophomores and will all play big roles in this year's passing game. None are super fast or tall, but all are good possession receivers.
At tight end VT has Greg Boone, Sam Wheeler, and Andre Smith. Boone is 280 pounds and is very quick for his size. He should start this year in the offense. Sam Wheeler is coming back from a serious knee injury, but was very effective before he was hurt.
Alabama: We all know that the Alabama WRs are led by Julio Jones. Jones is 6'4" and is very fast. He is an all-around WR who had over 900 yards and four touchdowns last year as a freshman. Other than Jones, Alabama's passing game isn't very star powered. They have senior Mike McCoy and Marquis Maze who is small, but a very quick player.
At tight end Alabama lost their two starters from last year. This year they have lots of people to step in, but none are proven. The likely starter is Colin Peek who was a Georgia Tech transfer who left when Paul Johnson's option attack came to Atlanta. He is 6'6" and could replace the numbers put up by graduating starter Nick Walker.
Conclusion: For the WRs VT has more experience and overall depth. But Alabama's Julio Jones is a special player and he puts the edge in Alabama's favor.
As for Tight End's, Alabama lost their two starters and VT returns all of theirs. Greg Boone is a big time player and VT gets a significant edge here.