Echoes said:
In Lombardy 1983, Kelly wins in a bunch of 18 men:
http://www.cyclingrevealed.com/Top_20_Clsscs/top20Cl_6.htm
Lombardy 1985 was a parody of a classic, with finish back in Milan, with Ghisallo as last climb 50km far from finish. More than 15-man bunch.
In Milan-Sanremo 1986, Kelly outsprinted allrounder LeMond and pure climber Mario Beccia, the rest is far behind !
http://www.milansanremo.co.uk/1986result.htm
My point is that Milan-Sanremo is not a sprinter race. Was not in the past and is not at the present time, either. I don't know what more you need to accept that fact.
To call the 83 Lombardia a bunch sprint is misleading. Of the 18 riders in the break none were field sprinters. Kelly had already shown he had developed into something more than a sprinter with his victories in Paris Nice
The winning break also had most of the major teams represented by two riders, more than enough disincentive to chase.
1 Kelly Sean Sem - Mavic - France Loire 6h27'36'
2 Lemond Greg Renault - Elf m.t.
3 Van Der Poel Adri J.Aernoudt - Rossin - Campagnolo m.t.
4 Kuiper Hennie J.Aernoudt - Rossin - Campagnolo m.t.
5 Moser Francesco Gis Gelati - Campagnolo m.t.
6 Glaus Gilbert Cilo - Aufina m.t.
7 Ferretti Antonio Cilo - Aufina m.t.
8 Anderson Phil Peugeot - Shell - Michelin m.t.
9 Contini Silvano Bianchi Piaggio m.t.
10 Chinetti Alfredo Inoxpran - Pentole Posale m.t.
11 Lejarreta Marino Alfa Lum - Olmo m.t.
12 Seiz Hubert Cilo - Aufina m.t.
13 Ruperez Faustino Zor - Gemeaz Cusin m.t.
14 Criquelion Claude Splendor - Wickes Bouwmark m.t.
15 Mottet Charly Renault - Elf m.t.
16 Pedersen Dag-Erik Bianchi Piaggio m.t.
17 Munoz Machin Rodriguez Pedro Zor - Gemeaz Cusin m.t.
18 Roche Stephen Peugeot - Shell - Michelin m.t.
19 Panizza Wladimiro Atala - Campagnolo 1.03.
20 Pozzi Alessandro m.t.
Looking at the 85 result, it tells a similar tale. Bottom line is neither were bunch sprints like the kind we've seen at San Remo in the last 10 years or so.