Legendary former Arsenal midfielder Paul Merson does not feel that the Gunners have gotten enough credit for one thing this season. Arsenal are currently riding high and are in a rich vein of form. The Gunners are at the top of the Premier League table and are through to the quarter-finals of the Champions League having overcome a stubborn Porto side on penalties in the last round. Mikel Arteta’s men were really made to fight by the Portuguese outfit. Ultimately, though, David Raya was the hero as he made two saves in the penalty shootout at the Emirates Stadium to send the north London club t…