Im sorry but if this is what benchmarks will look like when the s4 is released then this is terrible. 19-21K on antutu? I overclocked my s3 to 1.8ghz and I hit 19+K and this is with the old A9 chip on 32nm and this s4 is an A15 chip on 28nm.
If I must say its not really a big improvement, this S4 will have a better gpu and more ram and gets that score, samsung thats disappointing.