Glasgow's driving lineout has become a potent weapon over the past couple of seasons with Mathews being a prominent beneficiary.
"It is a good weapon, it is getting pretty hard to stop. We got the three tries and then Delly did well to get the try at the end for the bonus point," admitted the 30-year-old hooker in The Scotsman.
"We set ourselves the target of getting the five points so we are pretty happy with that ahead of the review on Monday.
"I would say it shows how much we work on it and how good our lineout operators are, for instance Richie Gray is probably one of the best in the league.
"It is all down the hard work of the boys in front, but we know we can go for it when we need. They tell me when to put the ball down, I am just the one who gets the credit."
It's been quite a few months for Matthews after he was called up to the World Cup, got a first cap and a first try for Scotland against Romania.
"I was completely shocked to get the World Cup call, and then to get a game and score was brilliant. I have said before it has all been a bit of a whirlwind.
"Benetton next are a really good team, so we will have to be at our best to get a win at Scotstoun, but we are always confident at home."