Which Edmonton City Councillor makes the most motions?

With 4874 motions the councillor with the most motions is:
B. Anderson - Councillor Ward 9
96%

Meetings: 249 / 253 (98%)

Votes: 7 842 / 8 201 ( 96% )

The second-highest councillor is M. Nickel - Councillor with 1069
With 4025 seconds the councillor with the most seconds is:
T. Caterina - Councillor Ward 7
87%

Meetings: 245 / 270 (91%)

Votes: 7 142 / 8 201 ( 87% )

The second-highest councillor is M. Nickel - Councillor with 860

So, why do the top mover and seconder have roughly 5x the number of motions compared to their peers?

When looking at motions to read bylaws, two councillors come up as a mover-seconder power team very often
2015-10-19 City Council Public Hearing Bylaw 16985 - To allow for small scale residential infill development, West Jasper Place
Carried

That Bylaw 16985 be read a first time.

Unanimous

In fact, in motions to read bylaws this team moves and seconds
68%
of the time.