In general, the canonicity of Sonic Archie Comics is debated among fans. Different storylines and events within the comics may or may not align with the main Sonic franchise canon, depending on various factors and interpretations.
Archie Sonic comics have their merits. The storylines are often engaging, and the art is decent. However, it depends on your personal preferences for comic styles and themes.
The status of the Sonic Archie Comics as canon is a matter of debate. Different fans and official sources may have different views. Sometimes, certain characters or events from the comics might be referenced or integrated into other Sonic media, suggesting a degree of canonicity, but it's not a straightforward determination.
Wally could be developed by showing his growth in character. For example, if he was a bit cocky before, he could return more humble and with a deeper understanding of the world. This change could be a result of his experiences while he was away.
Wally West's speed in the comics is off the charts. He can move at velocities that surpass the limits of normal comprehension. His powers allow him to zip around and perform feats that seem impossible to others.