Okay, so presently the NASA SLS as designed will not work on an exoplanet with higher gravity and faster escape velocities than our planet. That is good to know because when discussing why E.T. phoning home has not buzzed our planet and said hello, perhaps what Unclear Engineer brought up should be part of the probability creation story equation too.Artemis would have to be re-engineered for a planet with a higher escape velocity than ours. This would entail reducing the payload mass, increasing the combustion chamber pressure or adding stages.
I just depends upon what the force of gravity is on the planet and how much weight you want to lift off.
A combustion chamber like ours, with 1,000 PSI inside it and, say, a ten square foot surface at the top has an upward force of 1,440,000 pounds. If the weight of the rocket is more than 1,440,000 pounds it won't get off the pad. If the weight of the rocket is 720,000 pounds it will acellerate upwards at 32 ft/sec^2.
Another note about weight for rockets. I watched a number of NASA TV online shows about rockets. Something like 80-85% of their weight is the fuel supply needed.
So, summing up what Unclear Engineer mentioned that jarred my old brain, our current rocket programs in use since 1957 through present, likely would not work on an exoplanet with higher surface gravity and greater escape velocities.