Not at all a good performer in 150cc category

I brought the all new suzuki gixxer sf glass sparkle black rear disc variant in 2016. I didn't test ridden the bike that was the worst mistake I ever made because many people where saying that it's a fun motorcycle to ride in reviews but for me it wasn't the gear shifts is the worst part of this motorcycle.. and then the engine sound if we try to push the engine hard it makes sounds like it'll blow off.. And when we try to revv it above 100kmph the engine just don't pull even after giving full throttle I don't understand why? And it can't even keep up with old yamaha fz16 but, then it looks good and it has the smoothest and more refined engine compared to other 150cc in its category its smooth when you ride under 90-80kmph gives good mileage, the feature I liked in this motorcycle is the speedometer and the exhaust sound & the seat on this motorcycle is not good for long touring you can do around 120 to 150kms at a stretch depending on person's there was engine oil leaking from the magnetic coil area and engine was overheating even after using fully synthetic oil from ecstar by suzuki. Am not at all satisfied with this Motorcycles overall performance it totally lacks the power and the service center are the worst it's not at all a value for money motorcycle go for any other motorcycles like 200ns, fz250, Pulsar 220 f or rtr 200 etc. But, before buying this motorcycle go for a test ride for at least 5 kms and check for any scratches and leak of oil from engine before bring your motorcycle home.