Well, as everyone said, felines are stronger, but yet no one has mentioned this really so I guess I will. Males are usually that laziest thing on the earth, sleeping 20 hours a day. And only waking for food or mating and defending territory from other males.
Canines are not actually used for fighting with their claws. Sorry woofaboos, but the lions so far have this down if its one on one. Mainly due to not just the muscle, but a lion's skin is much thicker with its fur also due to 1: the mane/tufts of fur and 2: African lions are use to having giant ticks, spikes from plants and fighting against other males to have such thick fur for protection. Canines, are known for traveling and having a good amount of stamina. Their fangs are used mainly for herding until prey is cornered or injured enough to have the whole pack finish off the one animal they separated from the group.
So....Lions would win not just one on one, but also in a pride vs a pack in equal numbers. Even the females fight when something is threatening the territory. So Felines