I think there is a misunderstanding on what a "tactical" victory is. It does not mean a victory of tactical formation, but rather a "success in battle without substantive or long-lasting gain", as opposed to a [[strategic victory which is "a success in a military campaign". If one sets ones sights low enough, and claim the goal of the operation was merely to establish a bridgehead, then it was a clear Soviet victory. However I seriously doubt the goal was only to gain a bridgehead, but rather to punch through the Panther Line, which the Soviets clearly failed to do. While the overall campaign was a clear strategic victory for the Soviets because they won the campaign in the end, it was a tactical victory for the Germans because they were successful in holding Narva even though it was not long lasting, i.e. six months.