John Sheridan believes Pompey will still be challenging for promotion from League Two this season – despite their Home Park woe.
The Plymouth boss saw his side turn on the style to secure a seventh straight home win with relative ease.
But the former Sheffield Wednesday midfielder remains convinced Pompey will be among those pushing for honours in May.
Sheridan said: ‘It was probably one of the best performances since I have been here as manager.
‘Going into half-time 3-0 up was very pleasing. I thought we played really well.
‘In the second half, we got a bit sloppy and gave the ball away too cheaply, even though we still had some good chances.
‘I can’t grumble with the way we played in the first half, against a strong team who will be up there come the end of the season.
‘You are playing against a big club in our division in Portsmouth.
‘So to come out and win the game the way we have done, playing really good football and getting three goals without conceding, is very pleasing.’
Sheridan felt his side’s fast start to the game had been a key factor and that his wide men were the architects of Pompey’s downfall.
He said: ‘The way we are playing at home at the moment, we believe we will win every game, whoever we are playing.
‘Even from the kick-off, I thought we started really well. We got them on the back foot and it gets the crowd lifted.
‘We knew if we got at them we could cause them problems. We have got those players in the team who can do that.
‘My two wing-backs (Andy Kellett and Kelvin Mellor) were like two wingers.
‘They got in good areas and created really good scoring opportunities.
‘And we have got two really good strikers who work their socks off. It was a really good win.’
– STEVE WILSON