I dont see it as a difficult battle. Logically psylocke would win with little difficulty (and im saying this as a big fan of emma). Psylocke is completley immune to telepathy so emmas only choice will be to go diamond and get in a quick shot but psylocke should be able to telekineticly toss her around.
Gender: Male Location: SF Bay, What is it Beezies?
What good is Emma's telepathy of Psylocke is immune to all forms of it? Not much.
Diamond Emma gets shattered like any mountains Psylocke focuses on. Emma sure isn't getting through Psylocke's TK shield either. Psylocke's strength is also in the incalculable category now since she recently said that it was only limited by her imagination. Then she said she "has no limit" to her imagination haha.
In the receant X-Men cartoon "Wolverine and the X-Men", these two woman had a controntation as Psylocke was helping the brotherhood, Emma was blind sided by a attack from Psylocke but then Emma got back up and hit her, then Psylocke attempted to use a psychic beem on Emma which Emma blocked then reversed which lead to a Knock Out to Psylocke by Ms.Frost, so in this fight I think Emma Wins. But that is just my opinion.