Will the difficulty level be around the same?

so when i was 13 and in 8th grade, i ran the 800m got a 2:22, but it felt like heck and it was hard. well now i am in high school and i did xc for the first time and did winter running to prepare. could i run like a faster 800m and have it feel like i did a race from 8th grade? like if i ran an 800, would the effort level be the same as like when i ran it in 8th grade? im not saying that i should run a 2:22 effort 800m, just if i showed the same effort as 8th grade, would my time be faster because i have more endurance and high school training? i am sorry if it is confusing to follow, i just could not figure out how to explain it.