I would assume Loma is in full fight mode and working harder than Shakur. Shakur has a lot of promise, but if they went at it right now he would get destroyed.
Sure...but lets not forget he's also only 20 years old with only 3 professional fights. If he's able to keep up in sparring vs Loma at this very early point of his career, the sky is the limit for him.
Think Floyd Mayweather vs Pernell Whitaker sparring when Floyd was brand new to the scene & Sweet Pea was the vet. Yes, Pea (Loma) wouldve won in an actual fight....but the mere fact Floyd (Shakur) more than held his own, possibly getting the best of Pea (Loma) boded well for what he became (may become) imo