Sure, Kakashi is present in the Boruto manga. His role might not be as prominent as in the Naruto series, but he still has significant moments and interactions.
Kakashi is very much alive in the Boruto manga. The manga doesn't include his death. Maybe you got some misinformation or confused it with another character's fate. But for sure, Kakashi is around.
It's hard to say for sure. Both Boruto and Kakashi have their unique skills and strengths. It could depend on various factors like the situation and their state of mind.