The 22-year-old has started Town’s last three League Two games after getting the nod ahead of Stuart Moore, who played against both Cheltenham and Grimsby previously.
Cuthbert said: “I think he’s been excellent. It’s always hard for a goalkeeper to come in, especially after big Christian (Walton).
“(He’s a) big boy, comes and commands his box and I love that as a defender.
“He comes out, he’s dominant and his kicking is good as well. He’s another young lad that’s hopefully got a bright future if he keeps doing well.”
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Macey was to have a quiet game at the weekend during Luton’s 1-1 draw with leaders Doncaster Rovers, beaten late on by sub Alfie May for the equaliser as Cuthbert continued: “I can’t remember big Matt making any saves, likewise with their goalkeeper, it was one of those games.
“I felt we were always very dangerous on the threat with Hylts (Danny Hylton) and Vass’ (Isaac Vaseell) pace.
“It was a counter attack that we scored from as well and we took that very well. It’s a difficult place to come and they’re a very good side.”
The Arsenal youngster looked more secure on crosses this time too, earning praise from goalscorer Jordan Cook, who said: “I think both defences were pretty tough to beat, although we had the better chances and caused more problems.
“Our back five including Matt were fantastic, they deserve a lot of credit because although one goal, all game there were worries out there.”
Meanwhile, boss Nathan Jones was quick to hail his whole defence for keeping a strikeforce, containing 18-goal frontman John Marquis, quiet for the majority of the engrossing encounter.
He added: “I thought the whole back four were excellent. They defended everything that came up against them.
“They’re a good front pair, Andy Williams and John Marquis, coupled with (James) Coppinger backing them up, are a real potent threat.
“They score goals but I thought we negated everything they did. We were excellent, it was a fantastic away performance and I’m really proud of my team. I’m just gutted for them because I felt we deserved three (points).