The Scottish Premiership side threw away a two-goal lead at Fir Park, conceding penalties either of half time, which were dispatched by Olafur Karl Finsen.
"If we're honest, it could've been six all. Being 2-0 up, it's then a disappointing scoreline but we're by no means out of the game," BBC Sports quotes McCall as saying.
"We'd have been happy to have gone over there with any sort of victory; 2-1 we'd have been more than pleased. It's all to play for now.
"All in all, disappointed not to have won the game but it's all to play for."
Debutant Josh Law netted both of Motherwell's goals in the qualifying fixture.