Wales midfielder Allen, one of seven Swansea starters who is shorter than 5ft 7in, was key to the 2-0 win, turning in a man-of-the-match performance as the Barclays Premier League newcomers soared into the top 10 and took a step towards survival.
Pointing to Barca's marvellous miniatures, stars like 5ft 7in trio Lionel Messi, Xavi and Andres Iniesta, Allen said: "We're here to do business, so we look at the top teams as well and their style of play.
"Clubs like Barcelona are a good example to us. They play good football and have small players like us."
The 21-year-old added: "We look at Blackpool for the way they played when they came up. They obviously went down, but they played well and competed at this level.
"We also look at the likes of Stoke, who have become an established Premier League outfit."