First, your evidence of another incident of a government strong arming a plane to land and capture someone is not evidence that either are not an abuse of power.

But even if we take as such, there are some major differences.

1. This was a journalist, not a government employee who stole classified information.

2. They claimed a bomb threat, and used a fighter jet to escort the plane down. There was no order to make this official, and as such was a hijacking.

3. The dictator president of Belarus has been arresting journalist and anyone else who may challenge him. Including anyone who runs against him in elections. Can't vote for people in jail/dead.