Naruto:
Born in Uzumaki clan...
- Huge Life span
- Huge Chakra reserves
- Most compatible with Bijuus(perfect option for jinchuriki)
Other traits...
Huge stamina
High determination and high willpower
High mental and physical resilience (fundamental for SM)
Sasuke:
Born in Uchiha clan...
- Inborn combat talent
- High {good-quality} chakra reserves
- Sharingan (further modified to MS & EMS)
Other traits...
High mental resilience (fundamental for anti-genjutsu)
High chakra reserves
Both are born with special qualities... Thus, their abilities shouldn't be deducted...
But, being a bijuu host is not a gift but a dis-advantage... and w/o it Naruto could be much better (technically and plot-wise) but Naruto using his inborn ability to perfectly co-op with Bijuu tames the beast and becomes friends with it...
Now, that's Naruto's advantage and should never be over-looked... It's what Naruto accomplished, it's not gifted...
On the other hand... Sasuke has everything for granted, except for the basic abilities he perfected under Orochimaru...
Coming to the main topic:
If we were to remove equivalent abilities from both characters, lets remove the abilities they were born with...
Sasuke loses everything whereas Naruto retains the ability to become a Sage...
Hence, Naruto outclassing Sasuke by far...
That's just me... and don't try to convince me to opposite coz I know how I interpret the manga and what I get from it...