PEEK and aluminosilicate glass belong to fundamentally different material chemistries. PEEK is a polymeric material, while aluminosilicate glass is ceramic. Therefore, their performance will be even more dissimilar than would be suggested by the difference in properties. There are 4 material properties with values for both materials. Properties with values for just one material (28, in this case) are not shown.
For each property being compared, the top bar is PEEK and the bottom bar is aluminosilicate glass.