Widnes skipper Kevin Brown scored a hat-trick of tries for the home side, with Liam Sutcliffe, Joel Moon and Rob Burrow each notching a brace for the Rhinos. Leeds romped into a 38-6 interval lead and further showed their dominance to stretch the lead to 52-18 before the home side made the scoreline more respectable.
McDermott, however, expressed no concern at Widnes' late charge which saw them cross for three late converted tries. He said: "I'm happy with all of it and have no problem with the last 20 minutes. Widnes are a good team and decided to play. We had a few blokes off the field then and were already without eight regulars."
He added: "I have zero issues with the points we conceded. Widnes had a crack and didn't give up. I won't let the last 15 or 20 minutes put a negative slant on what basically was a very good performance."
McDermott paid tribute to teenage stand-off Liam Singleton and said: "He has a good range of skills and is getting more comfortable and relaxed the more game time he gets. Kallum Watkins looked sharp on his comeback and Ben Jones-Bishop gets stronger every week and had a robust game.
"Zak Hardaker was very good too and Ryan Hall was his usual self."
Widnes boss Denis Betts blasted his side's first-half show when they trailed 38-0 until Brown's try just before the break.
Betts said: "I've not seen a half as bad as that for a long time. I am very disappointed and it was embarrassing. There were smatterings of last year in it.
"We went after Leeds a fortnight ago but they gave us a lesson here how to hassle opponents. They had more energy and enthusiasm than us, tackled harder and ran harder.
"It's a simple game but it was all over by half-time. We got back some pride and character but it was too late."
- Sports & Recreation