I would respectfully disagree I would say that the total quantities of Polymer pistols far out strip the production of 1911 type pistols.
A lot of 1911 manufactures are small and will never come close to the rate of manufacture of the large ones.
It would be interesting to know how may 1911s say Springfield sells compared to their XD line or some one like S@W or Ruger who have many polymer pistols but only one 1911.
The fact is, M1911 type pistols have been in continuous production since 1911 and remain so. There were 2.5 million M1911A1 pistols delivered during WW2 alone. Then there is Colt's continued commercial production and those of the various clone makers. Polymer pistols became available in the 1977-1980 period. Logic dictates that the polymers have not been in series production long enough to approach the numbers of the 1911 military and commercial production plus foreign clone production plus its domestic production.