Stealthy - notice the Y at the end. Between, stealth is a continuum. There is nothing that is completely invisible to detection. There are US professionals who post this not only in other forums but on PDF - that in operational conditions, these so called invisible jets are necessarily invisible.
The RCS of any aircraft varies, operationally, in terms of angles, and in terms of what radar is detecting it. Modern radars have greater ability to detect stealth aircraft, as do special radars that are able to consistently detect stealth aircraft.
Is the block 3 more stealthy than the Block 2? Some would suggest so. If I recall, including messiach. Is the Super Hornet stealthier than the Hornet? I would think so. Is the Azm going to be stealthier than the JF-17? I hope so!
Where is the lack of logic in this post my friend?