War in Poland 1939 - false myths?

[Stellan Bojerud (RIP)]

THE MYTHS

In most books written about the Polish Campaign 1939 it is stated that Poland was totally chanceless because amongst other things:

1) The Polish Army was inferior in quality and quantity compared with the Germans.
2) The Polish Forces did not have time enough to mobilize.
3) The Polish Airforce was destroyed on the ground within two days.
4) The Polish Cavalry attacked German tanks with sabres.
5) The Polish Defence was deployed to an obsolete 1914-18 concept.
6) The Germans used new surprising Blitzkrieg tactics.

Looking a bit deeper on facts I have found all these six myths to be false. On the other hand I am aware that perhaps it is me who got it all wrong. So please correct me when I am wrong.

Picture: Polish Cavalry.