Of course a localized fire-support option will always have greater accuracy and reaction speed. But is it worth trying to force heavy vehicles through unfriendly terrain?
It seems it is worth... or you want to put in question real combat experiences of several different armies with some silly theories of yours?
The paper you cited also clearly shows that tanks and wheeled/tracked carriers become road-bound and terrain-dependent quite quickly. They limit, rather than extending, the maneuver of the units in question.
And still most highly advanced armies said "screw the lightweight wunderwaffe platforms, let's go with tanks, heavy infantry fighting vehicles and heavy armored personell carriers". Even the standard Stryker APC in US Army service, that weight below 20 tons, had been eplaced on production lines with heavier than 20 tons, new better protected DVH variant.
I also read a interview with one of high rank US Army officers. He said clearly, every land combat vehicle will be heavier. HMMWV in combat will be replaced with heavier and better protected JLTV, standard Stryker replaced with Stryker DVH, M113 replaced with better protected AMPV, M2 replaced with better protected and heavier GCV IFV, M1 tanks won't be replaced until 2035 when there is considered work for new MBT, untill that moment, M1's will receive another armor modernization and other survivability improvements among other improvements. M109A6 will be replaced with a bit better protected and heavier M109PIM. And this is only US Army alone.
Look at Heer of the German Bundeswehre. Marder is currently slowly replaced by heavier and better protected Puma, Fuchs by bigger and better protected Boxer, Leopard 2's receive armor improvements.
Look at Israel, the plans before 2006 were to cease Merkava production and go with lightweight wheeled platforms. After 2006 and Lebanon war, Israelis change their minds because conclusion is clear, only tanks and heavy APC/IFV's can achieve enough survivability on modern battlefield and eventuall lighter platforms can be used only as support for them and infantry.
Same goes for Russia, "Armata" platform based vehicles will have a weight depending on variant from ~50 to ~65 tons, "Kurganets" platform based vehicles will have base weight of approx 25 tons and more if uparmored, "Boomerang" platform based wheeled vehicles also. A significant shift from below 50 tons MBT's, and very lightweight BMP's and BTR's.
UK another example, not long time ago they wanted to scrap most Challenger 2 tanks, recently they changed their mind and decided to keep them. Look at Warrior upgrade, or even FRES SV that is significantly bigger, heavier and better protected than his predecessors Scorpion and Scimitar.
Think about this, because all these actions are based on real life experiences, not some fancy theories.