Do you feel he has chances of winning against me in a fight now? Say honestly.

Yesterday I saw the boy named Lohith who is 2 years junior to me. He changed a lot compared when I saw him the last time back in 2017. He became really big and overweight(I am not making fun of him I am just saying how much he changed so please don't get offended). He had always been fat even in school days but I was still quite bigger in size than him and also much taller too. Like in 2015 when I was in 10th grade I was 5'7(171 cm) and Lohith was in 8th grade and only around 5'1(154 cm). He grew to 5'2(158 cm) in 2016 when he was in 9th grade but yesterday even though he was very far he seemed about same height as me now (I am 5'8 or 5'8 1/2). So now I don't have any height or size advantage against him which I had in my school days in fact he would look slightly bigger next to me now. I remember in 2014 when I was in 9th grade and he was in 7th grade I used to often punch him or scare him because as he used to laugh at me and also I used to be really in bad mood as I used to get daily bullied by my no.1 enemy Arjun. But now if we have a fight, I would get badly hurt by him because of his size. Now he has chances of winning against me too. If he fights me seriously, he can beat me up pretty good now. But I also have chances because being my junior he would most likely still get scared of me and wouldn't be confident in the fight and that will make me win the fight but still it wouldn't be as easy as it was during our school times as he is 18 now and I am 20 and we are both adults now. Who would win in your opinion?