It is normal that when someone buy the bike or car during the last quarter of the year, it happens by mistake or overlook of the document. Yes, when one buys a bike at the end of the year and process the registration paper later, the RTO will consider the date when they process the paper, it means, they might have received your bike paper at the end of the year (2014) but would have processed it during beginning of the year 2015 and updated the same in manufacturing column too by mistake.
The data entry people sometime overlook on such document or consider the value column which already existed for previous customer data.
I know one thing happened to my close one is, authority done major mistake was all the data entered were correct except Bank name, thus, unable to get an approved scholarship amount despite roaming for few days, spending money and energy, after few email exchanged and few months later, finally they changed the correct Bank name but still money not received and online status shows that money credited to corrected Bank account whereas still it shows zero.
The image that you provided is also known as smart card (certificate registration from Govt. authority) and the authority would have overlooked it than Honda dealer. You have to approach the RTO to clarify it after the Honda to confirm for modifying it. I feel Honda wouldn't have done any mistake but the other authority would have overlooked it. You can apply for modifying it.