Comparing the two set of bytes suggests there might have been a problem where the tape physically "stuck" and then "jumped", reading erroneous data:
Of course there is no way to know what conditions the tape had been stored in, how well the tape reader had been maintained, and how the reading ...
There is no easy answer without way more information - especially as it's a non-IBM machine.
In any case, a bit flip on 9 track is of course possible, like with any media. Detecting it depends on a lot of factors not mentioned so far - for example what format is used, what block structure, if at all, and what additional checking this block structure offers.