"I've tried to focus on the game today for the past two days", he added.
While Batshuayi will take the headlines, Schurrle was at the heart of so much that Dortmund did going forward, setting up the opening goal and creating several more chances for his team-mates.
The outcome provided a measure of revenge to Dortmund coach Peter Stöger, who was sacked by Cologne at the beginning of December.
Stoger was full of praise for the Belgium global and he expects the 24-year-old to be a key player for his side after the departure of Pierre-Emerick Aubameyang to Arsenal.
The Belgian could have finished with a hat-trick after having a goal ruled offside before the break.
It lifts them to second in the table, level on 34 points with Bayer Leverkusen and Schalke who play Saturday, behind leaders Bayern Munich.More news: Monopoly Cheaters Edition Says Go Ahead, You Know You Want To
As the race for the Champions League spots is a tight one in the Bundesliga, Dortmund was desperate for the win, and Batshuayi showed he can be an adequate replacement for Aubameyang even though he has to prove his ability in the long run.
"His debut is what we had hoped for".
Swiss centre-back Manuel Akanji, who cost 21.5 million euros ($26.4 million) from Basel last month, made his Dortmund debut in the dying stages off the bench.
Indiscretions like missing a team meeting, training poorly, missing a team meeting and arranging a video shoot on club premises without permission, tarnished his departure after five years at Dortmund.
Batshuayi was also asked why he signed for Dortmund after the match, to which he replied: "I love Borussia Dortmund".
"We had two in the raffle - Giroud and Batshuayi". He has that goal instinct and a great goal-scoring record.