The Eagles trailed for much of the game to Ricardo Fuller's early strike - but the introduction of 39-year-old striker Kevin Phillips inspired a comeback during which Glenn Murray's double sealed the points.
Holloway said of his ageing stars: "Lots and lots of chairman think that when you're 31, 32, 33, 34, that you're finished.
"Some people are just starting. Kevin Phillips is just a masterclass, look how Glenn Murray played in the second half. Kev knows what he's doing. That was great for the lads and I felt we deserved it.
"It's all about getting this momentum again," he added. "We need to regain it because we've lost it a bit, and then who knows?
"Reading managed to get it at this time of year last year and it ain't over until it's over. We certainly haven't lost anything, this is the whole point. It feels sometimes like you've lost sometimes, but you've never had it anyway.
"I didn't come here to get us promoted. I came here to promote Premier League standards and Premier League football.
"Now it didn't look like that today but by the end of the game it did. So let's keep working, keep going and see what we can do by the end of the whole season."