There is no way to answer your question as there are so many variables that you are not thinking of and that may affect other's opinions. For instance, let's assume "terpenes are terpenes" from a chemical stand point and strip all the "terpenes" from a THC extraction for concentrate and then add THE EXACT SAME ONES back in after processing. Will the extraction act the same as the original flower?
No. There are LOTS of components in the essential oils of which terpenes are but one.
Here, a study is putting together a database of volatiles from different plants. The components change depending on many plant factors and the database is designed to identify individual characteristics of a plant based on a sample of the volatile oils.
In the discussion, the theory of terpenes are terpenes is mentioned.
As an illustrative example, we have used EssOilDB to carry out an assessment of the relationship between terpene biosynthetic pathways and actual emission records. The biosynthesis of monoterpenes and diterpenes is conventionally believed to be compartmentalized in plastidial territory of the plant where the 2C-Methyl-D-erythritol 4-phosphate (MEP) pathway is known to be located. In contrast, sesquiterpenes and triterpenes are supposed to be synthesized in cytosol through classical mevalonic acid (MVA) pathway (
27). This assumption is further supported by recent studies on promoter analysis in
Arabidopsis thalianathat suggest an abundance of light and circadian clock related motifs in MEP pathway gene promoters reflecting higher expression of this pathway in green tissues as compared to MVA pathway (
28). Spatiotemporal expression analysis of genes encoding farnesyl pyrophosphate synthase (FPPS), geranyl pyrophospate synthase (GPPS) and geranylgeranyl pyrophosphate synthase (GGPPS) in
A. thaliana have also supported the fact that photosynthetic tissues have higher expression of
AtGPPS and
AtGGPPS genes
;generally assumed to synthesize monoterpenes and diterpenes respectively. In contrast, the
AtFPPS gene
,which is responsible for the biosynthesis of sesquiterpenes, showed higher activity in roots and seeds as compared to above ground, green parts (
28). We used EssOilDB to test this hypothesis and found that green parts of plants (that are likely to have a more active plastidial MEP pathway) do indeed show relatively greater amounts of released hemi, mono and diterpenes, as compared to sesquiterpenes. In contrast, the non-green plant parts, such as the underground regions and woody parts (signifying an absence of plastidial units and therefore a less active MEP pathway) release higher amounts of sesquiterpenes as compared to monoterpenes. This has been depicted in
Figure 5A, with emission data records from green (plastidial) parts, leaves, fruits and flowers releasing a higher percentage of monoterpenes as compared to sesquiterpenes, whereas roots and bark or woody parts release more sesquiterpenes, thus significantly adding value to the hypothesis.
I hope that clears that up.